Puncture liquid extraction device for medical oncology

Abstract

The invention provides a puncture and liquid extraction device for medical oncology, and relates to the field of medical instruments, the puncture and liquid extraction device comprises a piston cylinder, the piston cylinder is inserted into a container cylinder, a liquid extraction assembly can cooperate with a puncture needle and a drainage tube to achieve drainage operation of hydrops in a patient body, and continuous drainage and extraction are achieved; the hydrops in the body of a patient can be extracted and discharged at a time, use is convenient and flexible, the operation assembly can regulate and control the negative pressure generated during hydrops extraction, so that the comfort of the patient during hydrops extraction and drainage is improved, meanwhile, when the puncture needle is blocked by the body tissue of the patient, hydrops extraction and drainage operation can be automatically interrupted, use is stable, and use is convenient. The problems that according to an existing liquid extraction device, negative pressure is produced through an injector to extract effusion, the single-time maximum liquid extraction amount is fixed, when the effusion is too much, the injector needs to be assembled and disassembled repeatedly to extract the effusion, and the negative pressure cannot be controlled are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a puncture and fluid extraction device for oncology. Background Art

[0002] The Department of Oncology is mainly engaged in the internal medicine treatment of various benign and malignant tumors. Among them, puncture and fluid extraction is one of the commonly used physical therapy methods. It can drain the accumulated fluid in the patient's body. When extracting fluid, the medical staff first punctures the corresponding part with a puncture needle, and then extracts the accumulated fluid in the body through a fluid extraction device (the most common one is a syringe).

[0003] However, as for the currently available puncture and extraction device for oncology, it uses a syringe to create negative pressure to extract the accumulated fluid. The maximum single extraction volume of this extraction method (i.e., the maximum volume of the syringe) is fixed. When the accumulated fluid is large, the syringe needs to be repeatedly installed and removed for extraction. In addition, this method of creating negative pressure cannot control the negative pressure. When the negative pressure is too large or the puncture needle is blocked by the patient's body tissue, the patient will feel strong discomfort during the extraction. It has poor stability and is not very practical. Summary of the invention

[0004] The disclosed embodiments relate to a puncture and fluid extraction device for oncology internal medicine, which comprises a fluid extraction component and an operating component. The fluid extraction component can cooperate with a puncture needle and a drainage tube to realize the drainage operation of the fluid accumulated in the patient's body, and is a continuous drainage and extraction, which can extract and discharge the fluid accumulated in the patient's body at one time. The use is convenient and flexible, and the operating component can regulate the negative pressure generated when the fluid is extracted, thereby improving the patient's comfort during the fluid extraction and drainage. At the same time, when the puncture needle is blocked by the patient's body tissue, the fluid extraction and drainage operation will be automatically interrupted. The use is stable, and the flexibility, stability, adaptability and practicality are extremely strong.

[0005] In a first aspect of the present disclosure, a puncture and fluid extraction device for oncology is provided, which specifically comprises: a fluid extraction component and an operating component, wherein the fluid extraction component comprises a container barrel, a piston barrel, a driving rod and a direction limiting block, wherein the piston barrel is inserted into the interior of the container barrel, the driving rod is rotatably connected to the interior of the container barrel, and one end of the driving rod is inserted into the interior of the piston barrel, and the direction limiting block is radially inserted into the interior of the driving rod; the operating component comprises an operating rotary cylinder, a driving disk, a pressure disk, a positioning rod and an indicating block, wherein the operating rotary cylinder is rotatably connected to the outside of the container barrel, and the driving disk is inserted into the interior of the operating rotary cylinder, the pressure disk is inserted into the interior of the operating rotary cylinder, and the pressure disk and the driving disk can only move axially in the interior of the operating rotary cylinder, the positioning rod is rotatably connected to the interior of the operating rotary cylinder, and the indicating block is radially inserted into the interior of the operating rotary cylinder.

[0006] In at least some embodiments, the sides of the container tube are respectively provided with a liquid inlet channel and a liquid discharge channel, and the interior of the container tube is also provided with a temporary liquid storage chamber, the piston cylinder is located inside the temporary liquid storage chamber, and the piston cylinder can only move axially inside the temporary liquid storage chamber, and the interior of the liquid inlet channel and the liquid discharge channel are both provided with a one-way valve for controlling the flow direction of the liquid.

[0007] In at least some embodiments, a reciprocating groove is provided on the outside of the driving rod, and the groove body of the reciprocating groove is designed in a "V" shape. The "V"-shaped angle of the reciprocating groove body is one hundred and eighty degrees, and there are two reciprocating grooves, which are connected to each other end to end. A driving protrusion is provided inside the piston cylinder, and the driving protrusion is inserted into the inside of the reciprocating groove.

[0008] In at least some embodiments, a pressure spring is provided on the side of the pressure plate, and two ends of the pressure spring are respectively against the side of the pressure plate and the side of the driving plate.

[0009] In at least some embodiments, suction gear rings are provided on the opposite sides of the drive disk and the drive rod, and the cross-sectional shape of a single tooth of the suction gear ring is a right triangle. Under the action of the pressure top spring, the teeth of the two suction gear rings are plugged into each other.

[0010] In at least some embodiments, the rod body of the positioning rod is provided with threads on the outside, and the positioning rod is screwed to the inside of the pressure plate through the threads of the rod body.

[0011] In at least some embodiments, a positioning top spring is provided inside the direction limiting block, and two ends of the positioning top spring respectively abut against the inside of the direction limiting block and the inside of the driving rod.

[0012] In at least some embodiments, the top block of the limiting block has a right triangle cross-section, and a limiting tooth groove is provided inside the container tube. Under the action of the positioning top spring, the block at the right triangle position at the top of the limiting block is inserted into the inside of the limiting tooth groove.

[0013] In at least some embodiments, an inclined indicating groove is provided inside the indicating block, and an indicating rod is provided on the top of the driving disk, and the indicating rod is inserted into the indicating groove.

[0014] The present invention provides a puncture and fluid extraction device for oncology, which has the following beneficial effects.

[0015] The fluid extraction component can cooperate with the puncture needle and the drainage tube to realize the drainage operation of the fluid accumulated in the patient's body. It is a continuous drainage and extraction, and can extract and discharge the fluid accumulated in the patient's body at one time. It is convenient and flexible to use, and the operating component can adjust the negative pressure generated during the extraction of the accumulated fluid, thereby improving the patient's comfort during the extraction and drainage. At the same time, when the puncture needle is blocked by the patient's body tissue, the extraction and drainage operation will be automatically interrupted. It is stable to use, which improves the flexibility, adaptability, stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0020] Figure 3 The present invention Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0021] Figure 4 It is a schematic diagram of the structure of the liquid pumping component after disassembly.

[0022] Figure 5 It is a schematic diagram of the structure after the operating components of the present invention are disassembled.

[0023] Figure 6 It is a schematic diagram of the internal structure of the piston cylinder when the piston cylinder of the present invention moves to the left.

[0024] Figure 7 It is a schematic diagram of the internal structure of the piston cylinder when the piston cylinder of the present invention moves to the right.

[0025] Figure 8 It is a schematic diagram of the internal structure of the present invention when the maximum suction pressure is reached and the operating drum continues to rotate forwardly.

[0026] Reference numerals list 1. Liquid pumping assembly; 101. Container cylinder; 1011. Liquid inlet channel; 1012. Liquid discharge channel; 1013. Temporary liquid storage chamber; 1014. Limiting tooth groove; 102. Piston cylinder; 1021. Driving convex block; 103. Driving rod; 1031. Reciprocating groove; 104. Limiting block; 1041. Positioning top spring; 2. Operating assembly; 201. Operating drum; 202. Driving disk; 2021. Suction gear ring; 2022. Indicator rod; 203. Pressure disk; 2031. Pressure top spring; 204. Positioning rod; 205. Indicator block; 2051. Indicator slot.

[0027] It should be noted that Figure 6 , Figure 7 and Figure 8The black arc solid arrow in the middle indicates the rotation direction of the operating drum, the black straight solid arrow indicates the movement direction of the piston cylinder, and the black straight hollow arrow indicates the flow direction of the accumulated liquid. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please refer to Figures 1 to 8 As shown: Embodiment 1: The present invention provides a puncture and liquid extraction device for oncology, comprising a liquid extraction component 1 and an operating component 2. The liquid extraction component 1 comprises a container cylinder 101, a piston cylinder 102, a driving rod 103 and a limiting block 104. The piston cylinder 102 is inserted into the interior of the container cylinder 101, the driving rod 103 is rotatably connected to the interior of the container cylinder 101, and one end of the driving rod 103 is inserted into the interior of the piston cylinder 102, and the limiting block 104 is radially inserted into the interior of the driving rod 103; the operating component 2 comprises an operating rotating cylinder 2 01, drive disk 202, pressure disk 203, positioning rod 204 and indicator block 205, the operating cylinder 201 is rotatably connected to the outside of the container tube 101, and the drive disk 202 is plugged into the inside of the operating cylinder 201, the pressure disk 203 is plugged into the inside of the operating cylinder 201, and the pressure disk 203 and the drive disk 202 can only move axially inside the operating cylinder 201, the positioning rod 204 is rotatably connected to the inside of the operating cylinder 201, and the indicator block 205 is radially plugged into the inside of the operating cylinder 201.

[0030] In the embodiment of the present disclosure, a reciprocating groove 1031 is provided on the outside of the driving rod 103, and the groove body of the reciprocating groove 1031 is designed in a "V" shape, the "V" angle of the reciprocating groove 1031 is 180 degrees, and there are two reciprocating grooves 1031, which are connected end to end to each other, and a driving protrusion 1021 is provided inside the piston cylinder 102, and the driving protrusion 1021 is plugged into the inside of the reciprocating groove 1031. During use, when it is necessary to extract and drain the accumulated fluid in the patient's body, after puncturing to the appropriate position with the puncture needle, the puncture needle is connected to the liquid inlet channel 1011, and then connected to the discharge channel 1012 through a hose, and the other end of the hose is connected to the collection container. After connection, the pumping component 1 can be controlled by the operating component 2 to perform the operation of pumping and drainage. When the operating cylinder 201 is rotated in the forward direction, the operating cylinder 201 can drive the driving disk 202 to rotate. Under the action of the pressure top spring 2031, when the driving disk 202 is rotating, the suction tooth ring 2021 on its side can drive the driving rod 103 to rotate synchronously through the mutual contact, extrusion and friction transmission of the beveled edges of the suction tooth ring 2021 teeth of the driving rod 103. When the driving rod 103 rotates, the reciprocating groove 1031 can drive the piston cylinder 102 to reciprocate inside the temporary liquid chamber 1013 through the driving protrusion 1021, thereby realizing the continuous pumping and drainage operation of the accumulated liquid, which is convenient and flexible to use.

[0031] In the embodiment of the present disclosure, the sides of the container tube 101 are respectively provided with a liquid inlet channel 1011 and a liquid discharge channel 1012, and the interior of the container tube 101 is also provided with a temporary liquid storage chamber 1013, the piston cylinder 102 is located inside the temporary liquid storage chamber 1013, and the piston cylinder 102 can only move axially inside the temporary liquid storage chamber 1013, and the interior of the liquid inlet channel 1011 and the liquid discharge channel 1012 are both provided with a one-way valve for controlling the flow direction of the liquid. In use, when the piston cylinder 102 moves inside the temporary liquid storage chamber 1013, a continuous pumping operation of the accumulated fluid in the patient's body can be achieved. When the piston cylinder 102 moves to the right, it is a pumping stroke. When the piston cylinder 102 moves to the right, negative pressure is generated inside the temporary liquid storage chamber 1013, thereby extracting the accumulated fluid in the patient's body into the temporary liquid storage chamber 1013. When the piston cylinder 102 moves to the left, it is a discharge stroke. When the piston cylinder 102 moves to the left, the liquid inside the temporary liquid storage chamber 1013 will be discharged through the discharge channel 1012. Therefore, under the continuous rotation of the driving rod 103, the piston cylinder 102 will reciprocate to continuously pump and discharge the accumulated fluid in the patient's body, and the accumulated fluid can be extracted, drained and discharged at one time. It is convenient and stable to use.

[0032] In the embodiment of the present disclosure, a pressure top spring 2031 is provided on the side of the pressure plate 203, and the two ends of the pressure top spring 2031 are respectively against the side of the pressure plate 203 and the side of the driving plate 202, and the driving plate 202 and the driving rod 103 are provided with a suction tooth ring 2021 on the opposite sides, and the cross-sectional shape of a single tooth of the suction tooth ring 2021 is a right triangle. Under the action of the pressure top spring 2031, the teeth of the two suction tooth rings 2021 are plugged into each other. In use, the operating component 2 can limit the maximum extraction pressure and improve the comfort of the patient during physical therapy. Because the two suction tooth rings 2021 are driven by the mutual contact, extrusion and friction of the beveled edges of the teeth under the action of the pressure top spring 2031, when the puncture needle is blocked or the extraction resistance is large, the extraction resistance will overcome the pressure top spring 2031 to maintain the transmission force between the two suction tooth rings 2021, so that even if the operating drum is operated thereafter When 201 continues to rotate forward, the beveled edges of the teeth of the suction gear ring 2021 will slip and avoid each other, making it impossible for the operating drum 201 to continue to transmit the driving rod 103 through the driving disk 202, that is, the liquid extraction component 1 will not continue to generate negative pressure, and it is stable to use. The outside of the rod body of the positioning rod 204 is provided with a thread, and the positioning rod 204 is screwed to the inside of the pressure plate 203 through the rod body thread. By rotating the positioning rod 204, the maximum value of the extraction pressure limited by the operating component 2 can be adjusted. When the positioning rod 204 is rotated, the positioning rod 204 can drive the pressure plate 203 to move inside the operating drum 201 through the rod body thread to change the use position, thereby changing the initial expansion and contraction degree of the pressure top spring 2031, that is, changing the extraction resistance required by the pressure top spring 2031 to maintain the transmission force between the two suction gear rings 2021, that is, the maximum negative pressure degree, which can be used for patients with different medical conditions for fluid extraction and drainage, and has strong adaptability.

[0033] In the embodiment of the present disclosure, an inclined indicating groove 2051 is provided inside the indicating block 205, and an indicating rod 2022 is provided on the top of the driving disk 202, and the indicating rod 2022 is inserted into the indicating groove 2051. In use, since the driving disk 202 is located inside the operating drum 201, the transmission state of the operating assembly 2 can be judged through the indicating block 205. When the beveled edges of the teeth of the two suction gear rings 2021 collide with each other, squeeze and rub against each other to stabilize the transmission, the indicating block 205 is hidden inside the operating drum 201, so that the indicating block 205 is hidden in the operating drum 201. When it is inside, it means that the inside of the fluid extraction component 1 is stably extracting and draining the accumulated fluid. When the bevel edges of the teeth of the two suction gear rings 2021 slip and avoid each other, the driving disk 202 will move inside the operating drum 201. When the operating drum 201 moves, the indicator rod 2022 will drive the indicator block 205 to move through the indicator groove 2051, so that the indicator block 205 protrudes from the inside of the operating drum 201. Therefore, when the indicator block 205 protrudes from the operating drum 201, it means that the negative pressure can no longer be generated inside the fluid extraction component 1 for extraction and drainage, and the angle and position of the puncture needle need to be adjusted.

[0034] In the embodiment of the present disclosure, a positioning top spring 1041 is provided inside the limiting block 104, and the two ends of the positioning top spring 1041 are respectively against the inside of the limiting block 104 and the inside of the driving rod 103, the top block cross-section of the limiting block 104 is a right triangle, and the inside of the container tube 101 is provided with a limiting tooth groove 1014, under the action of the positioning top spring 1041, the block at the right triangle position at the top of the limiting block 104 is inserted into the inside of the limiting tooth groove 1014, and in use, under the action of the positioning top spring 1041, the limiting block 104 can be limited by the limiting tooth groove 1014. The rotation direction of the operating drum 201 and the driving rod 103 is controlled. Under the action of the limiting block 104 and the limiting tooth groove 1014, the driving rod 103 cannot rotate in the reverse direction. At the same time, the two suction tooth rings 2021 can make the operating drum 201 unable to rotate in the reverse direction through the clamping of the straight edges of the gear teeth. Therefore, the operating drum 201 can only rotate forward when in use to achieve the operation of pumping and drainage. It is easy to use. At the same time, when the driving rod 103 rotates forward, the bevel edges of the gear teeth of the limiting block 104 and the limiting tooth groove 1014 will avoid each other and will not hinder the forward rotation of the driving rod 103. It is stable to use.

[0035] Specific usage and function of this embodiment: In the present invention, when it is necessary to extract and drain the accumulated fluid in the patient's body, after puncturing to the appropriate position with the puncture needle, the puncture needle is connected to the liquid inlet channel 1011, and then connected to the liquid discharge channel 1012 through a hose. After the other end of the hose is connected to the collection container, the operation component 2 can be used to control the extraction component 1 to perform the extraction and drainage operation. When the operating drum 201 is rotated in the forward direction, the operating drum 201 can drive the driving disk 202 to rotate. Under the action of the pressure top spring 2031, when the driving disk 202 rotates, the suction tooth ring 2021 on its side can drive the driving rod 103 to rotate synchronously through the mutual contact, extrusion and friction transmission of the bevel edges of the suction tooth ring 2021 teeth of the driving rod 103. When the driving rod 103 rotates, the reciprocating groove 1031 can drive the piston cylinder 102 to reciprocate inside the temporary liquid chamber 1013 through the driving protrusion 1021, thereby realizing the continuous pumping and discharging operation of the accumulated fluid in the patient's body. When the piston cylinder 102 moves to the right, it is a pumping stroke. When the piston cylinder 102 moves to the right, a negative pressure is generated inside the temporary liquid chamber 1013, thereby the accumulated fluid in the patient's body is pumped into the temporary liquid chamber 1013. When the piston cylinder 102 moves to the left, it is a discharge stroke. When the piston cylinder 102 moves to the left, the liquid inside the temporary liquid chamber 1013 will be discharged through the discharge channel 1012, thereby Under the continuous rotation of 103, the piston cylinder 102 will reciprocate to continuously pump out the accumulated fluid in the patient's body, and can extract and drain the accumulated fluid at one time. The operating component 2 can limit the maximum extraction pressure, which can improve the patient's comfort during physical therapy. Because the two suction tooth rings 2021 are driven by the mutual contact, extrusion and friction of the beveled edges of the gear teeth under the action of the pressure top spring 2031, when the puncture needle is blocked or the extraction resistance is large, the extraction resistance will overcome the pressure top spring 2031 to maintain the transmission force between the two suction tooth rings 2021. Therefore, even if the operating rotating drum 201 continues to rotate forward, the beveled edges of the gear teeth of the suction tooth rings 2021 will slip and avoid each other, making it impossible for the operating rotating drum 201 to continue to be transmitted through the driving disk 202. The driving rod 103, that is, the liquid extraction component 1 will not continue to generate negative pressure, and the use is stable. The maximum value of the extraction pressure limited by the operating component 2 can be adjusted by rotating the positioning rod 204. When the positioning rod 204 is rotated, the positioning rod 204 can drive the pressure plate 203 to move inside the operating drum 201 to change the use position through the rod body thread, thereby changing the initial expansion and contraction degree of the pressure top spring 2031, that is, changing the extraction resistance required by the pressure top spring 2031 to maintain the transmission force between the two suction tooth rings 2021, that is, the maximum negative pressure degree, which can be used for patients with different medical conditions to extract and drain the effusion. Since the driving disk 202 is located inside the operating drum 201, the transmission state of the operating component 2 can be judged by the indicator block 205.When the beveled edges of the teeth of the two suction gear rings 2021 collide with each other, squeeze and rub to stably transmit the transmission, the indicator block 205 is hidden inside the operating drum 201. When the indicator block 205 is hidden inside the operating drum 201, it indicates that the inside of the liquid extraction component 1 is stably extracting and draining the accumulated fluid. When the beveled edges of the teeth of the two suction gear rings 2021 slip and avoid each other, the driving disk 202 will move inside the operating drum 201. When the operating drum 201 moves, the indicator rod 2022 will drive the indicator block 205 to move through the indicator groove 2051, so that the indicator block 205 protrudes from the inside of the operating drum 201. When the indicator block 205 protrudes from the operating drum 201, it indicates that the inside of the liquid extraction component 1 can no longer produce. To generate negative pressure for extraction and drainage, the angle and position of the puncture needle need to be adjusted. Under the action of the positioning top spring 1041, the limiting block 104 can limit the rotation direction of the operating drum 201 and the driving rod 103 through the limiting tooth groove 1014. Under the action of the limiting block 104 and the limiting tooth groove 1014, the driving rod 103 cannot rotate in the opposite direction. At the same time, the two suction tooth rings 2021 can prevent the operating drum 201 from rotating in the opposite direction through the clamping of the straight edges of the gear teeth. Therefore, the operating drum 201 can only rotate forward when in use to achieve the operation of extracting and draining. It is easy to use. At the same time, when the driving rod 103 rotates forward, the bevel edges of the gear teeth of the limiting block 104 and the limiting tooth groove 1014 will avoid each other and will not hinder the forward rotation of the driving rod 103.

[0036] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0037] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A puncture and fluid extraction device for oncology, characterized in that: include: A liquid extraction component (1) and an operating component (2), wherein the liquid extraction component (1) comprises a container cylinder (101), a piston cylinder (102), a driving rod (103) and a direction limiting block (104), wherein the piston cylinder (102) is inserted into the interior of the container cylinder (101), the driving rod (103) is rotatably connected to the interior of the container cylinder (101), and one end of the driving rod (103) is inserted into the interior of the piston cylinder (102), and the direction limiting block (104) is radially inserted into the interior of the driving rod (103); the operating component (2) comprises an operating rotating cylinder (201), a driving disk (202) , a pressure plate (203), a positioning rod (204) and an indicating block (205); the operating cylinder (201) is rotatably connected to the outside of the container cylinder (101), and the driving plate (202) is inserted into the inside of the operating cylinder (201); the pressure plate (203) is inserted into the inside of the operating cylinder (201), and the pressure plate (203) and the driving plate (202) can only move axially inside the operating cylinder (201); the positioning rod (204) is rotatably connected to the inside of the operating cylinder (201), and the indicating block (205) is radially inserted into the inside of the operating cylinder (201).

2. The oncology puncture and fluid extraction device according to claim 1, characterized in that: The sides of the container cylinder (101) are respectively provided with a liquid inlet channel (1011) and a liquid discharge channel (1012), and the interior of the container cylinder (101) is also provided with a temporary liquid storage chamber (1013). The piston cylinder (102) is located inside the temporary liquid storage chamber (1013), and the piston cylinder (102) can only move axially inside the temporary liquid storage chamber (1013). Both the liquid inlet channel (1011) and the liquid discharge channel (1012) are provided with one-way valves for controlling the flow direction of the liquid.

3. A puncture and fluid extraction device for oncology as claimed in claim 2, characterized in that: The driving rod (103) is provided with a reciprocating groove (1031) on the outside, and the groove body of the reciprocating groove (1031) is designed in a "V" shape. The angle of the "V" shape of the groove body of the reciprocating groove (1031) is 180 degrees. There are two reciprocating grooves (1031), and the two reciprocating grooves (1031) are connected to each other end to end. A driving protrusion (1021) is provided inside the piston cylinder (102), and the driving protrusion (1021) is inserted into the inside of the reciprocating groove (1031).

4. The oncology puncture and fluid extraction device according to claim 3, characterized in that: A pressure spring (2031) is provided on the side of the pressure plate (203), and two ends of the pressure spring (2031) respectively abut against the side of the pressure plate (203) and the side of the driving plate (202).

5. The oncology puncture and fluid extraction device as claimed in claim 4, characterized in that: The driving disc (202) and the driving rod (103) are both provided with suction toothed rings (2021) on opposite sides thereof, and the cross-sectional shape of a single tooth of the suction toothed ring (2021) is a right triangle, and under the action of a pressure top spring (2031), the teeth of the two suction toothed rings (2021) are plugged into each other.

6. A puncture and fluid extraction device for oncology as claimed in claim 5, characterized in that: The rod body of the positioning rod (204) is provided with threads on the outside, and the positioning rod (204) is screwed to the inside of the pressure plate (203) via the rod body threads.

7. A puncture and fluid extraction device for oncology as claimed in claim 6, characterized in that: A positioning top spring (1041) is provided inside the direction limiting block (104), and two ends of the positioning top spring (1041) respectively abut against the inside of the direction limiting block (104) and the inside of the driving rod (103).

8. The oncology puncture and fluid extraction device according to claim 7, characterized in that: The cross section of the top block of the limiting block (104) is a right-angled triangle, and a limiting tooth groove (1014) is provided inside the container tube (101). Under the action of the positioning top spring (1041), the block at the right-angled triangle position at the top of the limiting block (104) is inserted into the inside of the limiting tooth groove (1014).

9. The oncology puncture and fluid extraction device according to claim 8, characterized in that: An inclined indicating groove (2051) is provided inside the indicating block (205), and an indicating rod (2022) is provided on the top of the driving disk (202), and the indicating rod (2022) is inserted into the indicating groove (2051).

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